Need help ASAP What are the solutions to the system of equations?

{y=−15x^2+4y=−x+4

Plz i beg u asap ! what is the equation of this graphed line? enter your answer in slope-intercept form in the box.

It is saturday morning and jeremy has discovered he has a leak coming from the water heater in his attic. since plumbers charge extra to come out on the weekends, jeremy is planning to use buckets to catch the dripping water. he places a bucket under the drip and steps outside to walk the dog. in half an hour the bucket is 1/5 of the way full. what is the rate at which the water is leaking per hour?

How do you write 0.5% as a fraction